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Power Start Instruction Manual

Operating and Safety Instructions For PS800, PS1224, PS1224-HD & PS24-HD

For the purposes of this manual the words MEGA-BOOST and POWERSTART are interchangeable as the units underwent re-branding in 2008.

The POWERSTART portable power packs are designed to assist with starting 12 and 24 volt vehicles that have discharged batteries. To ensure safe and trouble-free operation of your POWERSTART you must follow the instructions below.


Failure to do so may lead to a HAZARDOUS situation, damage the pack or the vehicle and will invalidate the Warranty. Remove personal items such as rings, bracelets and watches when working with a vehicle battery. Use POWERSTART for boosting standard 12 V or 24 V vehicle batteries only. Switch unit off when not in use.


The state of charge is best checked 2 hours after charging. Ensure all cables are disconnected. Push the “Push to test” button. The LEDs will indicate the approximate state of charge of the unit.


Warning: The power pack MUST BE SWITCHED OFF and the switch key must be removed BEFORE the charger is connected to the power pack. Ensure all output cables are disconnected. Failure to do so may damage the charger and or PCB and will prevent the unit from charging.

Connect the charger plug to the 4-pole socket on the front of the unit. Plug the charger into the mains (230 VAC 50 Hz). Switch on the charger using the switch on the side. The “Charge Indicator” LED will illuminate. The charger LEDs will indicate when the unit is full, however, we recommend leaving the POWERSTART on charge when it is not being used as this will ensure that the batteries are ready for use. Before disconnecting the charger from the unit switch off using the switch on the side of the charger.

Only charge using the supplied charger. No other charger should be used as this may cause damage to the batteries. Never leave the POWERSTART discharged at any time. This may cause permanent damage to the batteries and is not covered by the Warranty.


POWERSTART may also be charged from a 12 volt vehicle cigarette lighter socket by using the optional cigarette lighter lead. This lead is designed to connect the charge socket on the POWERSTART to the cigarette lighter on the vehicle. The POWERSTART will only be recharged slowly using this lead and only while the vehicle engine is running. Therefore the pack should normally be recharged using the mains charger. Insufficient charging of the pack may result in failure and this is not covered by the Warranty.


Always follow the vehicle manufacturer’s instructions for safe jump-starting. Check the voltage of the vehicle system (12 V or 24 V). Ensure the POWERSTART key-switch is in the "OFF" position. Switch off all lights and other loads on the vehicle.
Connect the POWERSTART output cable to the correct socket (12 V or 24 V) on the power pack. Connect to the vehicle system observing correct polarity. The pack MUST be connected to the correct voltage and polarity of the vehicle system.

If the polarity is wrong a buzzer will sound and the reverse indicator LED will light up. Reconnect correctly. Always check that the connection polarity is right even if the buzzer does not sound. Switch on POWERSTART by inserting and turning the switch key. Make sure cables are free of turning parts of engine and start the engine normally. If the engine does not start within 10 seconds, stop and wait for one minute before making a further attempt. After the engine has started, allow it to run for a few minutes to recharge the vehicle’s on-board battery. Switch off the engine then switch off the POWERSTART and remove the negative clamp, then the positive clamp. Restart the engine from the vehicle’s on-board battery.

Note: It is not recommended the POWERSTART is used to start vehicles without a battery fitted or with a battery that has had the electrolyte dried out. Damage may occur to the POWERSTART or the vehicle if the POWERSTART is disconnected or switched off while the engine is running.


The POWERSTART can also be used to maintain the vehicle’s computer memory functions when the vehicle’s on-board battery is disconnected. The optional lead with two cigarette lighter plugs is used for this purpose but can only be used with 12 V vehicle systems. The cigarette lighter socket on the POWERSTART cannot be used for charging the batteries.


If your POWERSTART is protected with a Safety Fuse in the side of the case then this may be replaced with another of the same type and rating. The fuse may blow if the unit is short circuited or otherwise abused. Spare fuses may be obtained from your supplier who will be pleased to assist you with all other service and repair issues. The unit case must not be opened as there are no user serviceable parts inside and this will invalidate the Warranty.


The POWERSTART has a spike protection system. This protection is in operation as long as the clamps are connected to the vehicle, even when the unit key-switch is switched off. NEVER remove one of the clamps before the key-switch is switched off.


The batteries inside the POWERSTART are sealed lead types. They must be removed and recycled or disposed of properly at the end of their useful life.

POWERSTART is exclusively manufactured for Serenco and BV Corporation by DMS technologies in the UK. We reserve the right to change the specification without notice.

K200-I035 Issue 1 Apr 2003

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